4540423 has 2 divisors, whose sum is σ = 4540424. Its totient is φ = 4540422.

The previous prime is 4540397. The next prime is 4540427. The reversal of 4540423 is 3240454.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4540423 - 2⁹ = 4539911 is a prime.

4540423 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 4540394 and 4540403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4540427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2270211 + 2270212.

It is an arithmetic number, because the mean of its divisors is an integer number (2270212).

Almost surely, 2^4540423 is an apocalyptic number.

4540423 is a deficient number, since it is larger than the sum of its proper divisors (1).

4540423 is an equidigital number, since it uses as much as digits as its factorization.

4540423 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 4540423 is about 2130.8268348226. The cubic root of 4540423 is about 165.5892369918.

Adding to 4540423 its reverse (3240454), we get a palindrome (7780877).

The spelling of 4540423 in words is "four million, five hundred forty thousand, four hundred twenty-three".